After fiddling with the various settings on my new Tosh 42in plasma last night, I discovered something curious with the Picture Pos/Size settings. Reducing the H & V size reveals much more image on most channels. On Sky 1, for example, reducing both H & V sizes to -5 (assuming the centre is 0 and the end points +/-10) reveals 'hidden' parts of a 4x3 programme but most adverts then appear with black bars at the top and bottom. The position of the DOG on 4x3 programmes is then a good logo width in from the left/right of the screen when the full broadcasted image is revealed in this way. I knew that overscan existed but I never realised just how much -- we're missing a good 20% of the image on some channels!